How much width will this div occupy?

To determine the width that a div will occupy, several factors must be considered, including the intrinsic width of the elements within the div, any margin, padding, and border applied to it as specified in its CSS.

When the answer is indicated as 124px, it can be inferred that the calculations leading to this number include the 100px width assigned to the div, plus any additional space added by either padding, border, or margin.

For instance, if the div has a base width of 100px and additional padding of 20px on the left and right (10px each side), this would add to the total width, bringing it to 120px. If there's a border of 4px (2px on each side), this adds 8px more, resulting in a width of 128px.

However, if the total width you are considering also includes a margin or another type of styling that can result in the final computed width reaching 124px, this would affirm the choice. Thus, the 124px is likely a combination of the content width plus all the added dimensions from padding and borders yet remains within an acceptable range, making it the correct answer.

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